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(No Model.) 2 SheetsFSheet 2.

J. B. SPANOGHB. STEAM BOILEB..

Patented Oct. 16,1894.

il Ik Il! Ill ll ITED STATES PATENT OFFICE.

JOSSE EGIDE SPANOGHE, OF ANTWERP, BELGIUM.`

STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 527,459, dated October16, 1894.

Application filed July 10, 1893.

jlb @ZZ whom it may concern:

Be it known that I, .Tossa EGIDE SPANOGHE, a snbgect of the King of theBelgians, residing at Antwerp, in Belgium, have invented certain new anduseful Improvements in Steam-Boilers, of which the following is aspecification.

The object of this invention is to provide a steam generator which willinstantly fur- 1o nish steam and will be economical and safe againstexplosion.

The essential feature consists in constructing the steel tubes, thewalls of which are preferably very thick, in comparison with 15 thediameter, in the form of a continuous range of tubes, which may bearranged in different Ways, for instance as a spiral or serpentinebundle, so that the whole range of tubes can be rotated about a shaftwithin 2Q the boiler and directly above the furnace.

. ure steam leaves them" at the other end.

The revolving shaft is provided at both ends Wlth stuffing boxes so thatthe entrance of the hot Water from the boiler into the hollow shaft andthe escape of the high pressure 3o steam from the tubes can take placeWithout loss or difficulty.

In the accompanying drawings: Figure l, 1s a vertical section of, awater chamber or boiler with revolving tubes. Fig. 2, is a ver- 5 ticalsection through the revolving shaft.

The tubes are preferably arranged in serpentlne form around the shaft,so as to be parallel With it., Figs. 3 and Il are also verticalsections, but the tubes are arranged in 4o three helical coils aroundthe shaft.

In Figs. l and 2 A is the hollow shaft carrled 1n bearings K. It iscomposed of two parts and the inner bore is cut off at D.

G isthe grate. The fire burning thereon heats the Water inclosed in theWater chamber F and heats the tubes E by its flames. The heating gasesescape above through a chimney L. From the` Water chamber F a tubeconduit passes to the left hand stuliing 5o box A of the revolving shaftA, and the hot water so conveyed enters the bore of A and Serial No.480,032. (No model.)

on reaching the middle part D, passes through a tube socket Q (see Fig.l) into the first tube. It thence circulates all through the tubes andis transformed into high pressure steam. The steam leaves the tubesthrough the passage P and enters the right hand bore of the shaft Awhich is separated at D from the left hand bore and passes out of theboiler through the right hand stuffing box A.

D uring the circulation of the Water through the tubes the shaft may berevolved by a pulley M or other suitable device so that the superheatingprocess takes place uniformly.

The furnace is charged With fuel through the fire-door H.

The same process for generating steam takes place in the modificationshown in Figs. 3 and 4. The hot Water leaving the Water chamber E entersthrough A and A on the left hand side into the socket N and into theinner coil of tubes E' circulating through these tubes till it reachesthe last tube on the right hand side. Here it enters into the secondcoil of tubes circulating through these also, till it reaches the lasttube on the left hand side. It now enters the third or outer coil oftubes from whence it passes through a socket O into the right handportion of the revolving shaftA leaving the boiler through The Watertubes are in this case indicated by the letter E all other lettersremaining the same as before.

I claim-m In combination in a steam generator, the hot Water chamber F,the heating chamber inclosed thereby, the pipe extending through theheating chamber and divided into two parts by a central partition, theinlet end of said pipe being connected with the hot water chamber and acoil of pipe one end of which is connected with the inlet end of thepartitioned pipe, the other end of said coil being connected with theoutlet end of the said pipe, substantially as described.

In testimony whereof-I have hereto set my hand in the presence of thetWo subscribing witnesses.

JOSSE EGIDE SPAN OGHE.

Witnesses:

GE. F. LINCOLN, WILLIAM I-IAINE.

